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View Full Version : How do I identify what gear ratio is in my 1998 ford explorer


Robert Charlton
Sep 22, 2013, 07:41 PM
We have looked at tags on the rear diff. but it dose tell what ratio is.

ma0641
Sep 22, 2013, 08:13 PM
Put the car on a lift. Mark the driveshaft on the bottom with a chalk mark. Mark a tire on the outside top. Have someone rotate the driveshaft and count the revolutions as you count 1 revolution of the tire. If, for example, the tire rotates 1 turn to 3 1/2 turns of the driveshaft, you have a 3.5 axle ratio.

TxGreaseMonkey
Sep 23, 2013, 06:27 AM
Provide the VIN to your local Ford parts department. They may be able to answer the question for you.